Interlocking metal flashing



Sept. 24, 1929. A. CHENEY 1,728,955

INTERLOGKING METAL FLASHING Filed. Jan. 2, 1929 J) 1 L ere-Cor, i 146211070 070217189.

Patented Sept. 24, 19 29:

UNITED STATES PATENT OFFICE ALLAN ennui-1r, or unnnosa, m ssAcnUsE'rTs, ASSIGNOR TO THE CHENEY com: PANY, or 'wmcnnszrna, MASSACHUSETTS, A CORPORATION or MASSACHUSETTS INTEBLOCKING METAL FLASHING Applieationiiled- January 2, 1929. Serial No. 329,705.

This invention relates to improvements in interlocking metal flashing and has for its object to prbvide a flashing preferably cnstructed of sheet metal and pressed in such form that when it is interposed between two courses in masonry in conjunction with ,the usual layer of motor which is employed as a binding agent, that a perfect mechanical bond will be provided in every direction between 1 the flashing and the adjacent courses of masonry. v

Another object of the invention is to so construct the strips of flashing that they may be effectively interlocked one with another with-.

out it being necessary to solder said strips together', there being an end portion provided upon each strip, which, when the str ps are connected together will underlie the adjacent end portion of the strip to which it is connected in such a manner that if water seeps between the interlocked strips that this water cannot pass downwardly through the masonry, but will, on the other hand, be diverted to the exterior faces. of the wall at a point where it can do no damage. a Still another object of theiinvention is to rovide a flashing strip with a flange projecting laterally from a face thereof and extendingalong a side thereof, the metal 0L said flange being folded in a manner to reinforce and stiflen the flange. The invention consists in an improved eonstruction of flashing'as set forth in the fol- I lowing specification and particularly as point- 'ed outin the claims thereof] Referring to the drawings: Figure 1 represents a perspective view oi' a strip of flashing embodying my iliieention, the 0 central: portion of the strip being broken away to save space in the drawings.

' Fig. 2 is an enlarged verticabsection as taken on the line 2-2 of Fig, 1, illustrating two strips of flashing interlocked together and inserted in alayer of mortar'betweentwo coursesof masonry. I Fig. 3 is an enlarged horizontal section taken on the line 3-3 of Fig. 1.

Fig. 4 is a transversesection through the wall of a building illustratingtwo of the from the bottom uses to which my improved flashing may be put in the wall of a building.

1 Like numerals refer to like parts throughout the several views of the drawings.

In the drawings, 5 represenfls a strip of Y flashing preferably constructed of sheet metal and folded to provide grooves 6 and ridges 7 alternately-arranged upon both sides of the strip. The grooves and ridges are, furthermore, formed with side walls 8 which are common to both the grooves and ridges and said walls are inclined-to bothof the faces of the flashing material ina manner to form dove-tail" shaped grooves and ridges. The side walls 8, furthermore, of bothgrooves and 6 rid es taper longitudinally of said grooves an ridges towardan edge ofthe material andvpre erably the opposite sides of a groove on one face of the strip tapers in the opposite direction to that in which the opposite sides of the adjacentgroovewhich is located'upon the same face of the strip tapers.

The grooves,- furthermore, on each side have their alternate edges arallel andthc remaining edges are incline alternately in opposite directions.

. The strip of flashing 5 has a downwardly bent flan e9" at one end thereof, said flange being inclined inwardlygat an acute angle to the under surface of saidstri At its other end the strip 5 has-an upwar ly and inwardly bent flange 10 which is located at an acute angle to the upper surface of said strip. The portion of the strip 5 between the flange 10 and the adjacent roove f5 slopes upwardly .85

0% said flange 10 to the top of thegroove, thereby providing an inclined face 11 and forming a. water deflecting trough. P v

The strip 5 is bent lengthwise thereof and at one side thereofat 12 to form a flange 13, and the ridge portions 7 are flattened'where they extend across the flange 13 so that the side walls 8 of the grooves and ridges are pressed against the bottoms of the grooves, thereby formin plaits 14 across the, flange. The plaits 14 reinforce and stiffen the flange In Figs. 2 and 4 the strip 5 as illustratedin position in a layer of mortar 15 between courses of bricks 16, and in Fig. 2 the end portions of two strips of flashing are shown interlocked together, at which time the flange 9 of one strip interlocks with the side wall 8 of the groove 6 of another'strip and the inclined face 11 of the latter strip is located beneath the'under surface ofthe former strip. When two strips of flashing are secured together in this manner it is not necessary to solder said strips together, and if water does seep between the adjacent surfaces of the flange 9 and wall 8, this Water will run down the inclined surface 11'to the bottom of the flange 10 and be diverted toward theexterior faces of the wall. v

The strip 5 of flashing is preferably slightly less in width than the width of the wall in which itis employed in order that the mortar in which the strip is imbedded may be'pointed in the usual well known manner.

When utilized at any of the locations in the wall of a building where flashing material is generally employed, the flashing of this invention will prevent water which may have foundits way between the courses of masonry located thereabove from seeping downwardly into the courses of masonry located therebeneath.

By providing thealternate grooves 6 and ridges 7 and by tapering said grooves and ridges as illustrated it is possible to imbcd the strip of flashing in the mortar 15 between the two courses of masonry and provide a perfect bond between the flashing and the mortar upon each side thereof and also between the adjacent courses of masonry between which theflashing strip is located.

At certain locations 'uponthe wall of a building, as, for eizample, beneath a coping, it is not necessary to have the laterally pro- 0 ecting flange 13 formed upon the strips of flashing that are employed. At other ,points, however, it is desirable to have the flashing inserted between coursesof' masonry with a flange 1.3 pro ect1ng either upwardly or downwardly. In the construction illustrated at A'in Fig. 4, the flange 13 projects downwardly outside of a base flashing 17 which projects upwardly, from the roof (not shown in the drawings) of a building. The construction illustrated at B, Fig. 4, is utilized in a wall at a point below the roof and v in. such instances the flashing is inserted between the layers of masonry" with the flange 13 projecting upwardly against the inner surface of the wall. The upwardly projecting flange prevents water from working inwardly beyond said flange and doing damage upon the interior of the building. In all instances where the flange 13 is'formed upon the strip of flashing, the plaitsf14 .reinforce, and'stiflen the flange and aftenthe flashing "has been inserted in the-masonry,

' the flange may be sprung outwardly, as, for

example, in order that a base flashing may side thereof, said corrugations being flattened against the face. of said strip and extending transversely across said flange and reinforcing the latter.

2. A flashing consisting of a continuous strip of sheet metal bent to form dovetail shaped grooves and ridges and a flange projecting laterally from a face of said strip at a side thereof, saidridges being flattened against the face of said strip and forming plaits extending transversely across said flange whereby the latter is reinforced.

3. A flashing consisting of a continuous strip of sheet metal bent to form dove-tail shaped ,grooves and ridges, a downwardly bent flange at one end of said strip and an upwardly bent flange at the other end of said strip, the end portion of the strip between said last-nained flange and the ad-- 5. A flashing consisting of a continuous' strip of sheet metal bent to form dove-tail shaped grooves and ridges, a downwardly bent'flange at one end of said strip, an upwardly bent flange at the other end of said strip, the end portion of the strip between said last-named flange and the adjacent groove sloping :downwardly toward said flange, a side flange projecting laterally from a face of said strip and plaits extending across said side flange and reinforcing the latter.

In testimony whereof I have hereunto set 

